chapter 29

Question 1

The waxy substance on leaf surfaces is the:
A. mesophyll
B. cuticle
C. epidermis
D. leaf hair
E. stomata

Answer 1

A. cuticle

Question 2

sieve plates:
A. contain mitochondria and chloroplasts
B. do not contain plasmodesmata
C. have solid, impermeable surfaces
D. dissolve at sieve tube maturity
E. are modified cell walls that connect sieve elements

Answer 2

the answer is E

Question 3

what benefit do nitrogen-fixing bacteria receive in their symbiotic relationship with plants?
A. they get increased phosphate availability
B. they consume plant cells
C. they are protected from predation
D. they receive carbohydrates
E. they get genetic information

Answer 3

the answer is D

Question 4

large areas of Antarctica are seasonally free of snow, but there is very little development of soil. what plants would you predict to find populating the rocky substrate?
A. gymnosperms
B. ferns and horsetails
C. lycophytes
D. bryophytes
E. angiosperms

Answer 4

the answer is D

Question 5

Where is carbon stored in a CAM plant prior to its assimilation into sugars?
A. in stomata
B. in the cells of vascular tissues
C. in epidermal cells
D. in the vacuole
E. in the air spaces between cells

Answer 5

the answer is D

Question 6

what’s dessication and what’s the risk?

Answer 6

dessication means drying out, and there’s a major risk of life in the air because of it

Question 7

true or false?
bryophytes have evolved the ability to withstand intermittent drying

Answer 7

true
- the majority of their surfaces are permeable to water
- rely on diffusion and osmosis to distribute water and nutrients

Question 8

how do vascular plants transport water?

Answer 8

through structures in the plant using bulk flow
- the access water in the soil through their roots

Question 9

look at anatomy of a vascular plant on goodnotes

Answer 9

!

Question 10

what is the principal site of photosynthesis?
A. the leaf
B. the stem
C. the veins
D. the cuticle

Answer 10

the answer is A. the leaf

Question 11

what are the three leafs major tissues?

Answer 11

1. the epidermis
2. the mesophyll
3. the veins

Question 12

what do mesophyll cells obtain in order to continue the process of photosynthesis

Answer 12

CO2, directly from the air spaces surrounding them
- if the air spaces were completely sealed off, photosynthesis would be affected, CO2 levels would be limited, and carbon fixation would come to a halt

Question 13

what is transpiration?

Answer 13

the evaporative loss of water vapor from leaves

Question 14

small pores called [blank] in the epidermis allow CO2 to diffuse into the leaf

Answer 14

stomata
( go to stomata section on goodnotes and study more )